* Copyright (C) Hans-Joachim Hetscher DD8NE (dd8ne@bnv-bamberg.de)
* Copyright (C) Frederic Rible F1OAT (frible@teaser.fr)
*/
+
+#include <linux/capability.h>
#include <linux/errno.h>
#include <linux/types.h>
#include <linux/socket.h>
#include <linux/seq_file.h>
static ax25_route *ax25_route_list;
-static rwlock_t ax25_route_lock = RW_LOCK_UNLOCKED;
-
-static ax25_route *ax25_get_route(ax25_address *, struct net_device *);
-
-/*
- * small macro to drop non-digipeated digipeaters and reverse path
- */
-static inline void ax25_route_invert(ax25_digi *in, ax25_digi *out)
-{
- int k;
-
- for (k = 0; k < in->ndigi; k++)
- if (!in->repeated[k])
- break;
-
- in->ndigi = k;
-
- ax25_digi_invert(in, out);
-}
+static DEFINE_RWLOCK(ax25_route_lock);
void ax25_rt_device_down(struct net_device *dev)
{
if (s->dev == dev) {
if (ax25_route_list == s) {
ax25_route_list = s->next;
- if (s->digipeat != NULL)
- kfree(s->digipeat);
+ kfree(s->digipeat);
kfree(s);
} else {
for (t = ax25_route_list; t != NULL; t = t->next) {
if (t->next == s) {
t->next = s->next;
- if (s->digipeat != NULL)
- kfree(s->digipeat);
+ kfree(s->digipeat);
kfree(s);
break;
}
while (ax25_rt != NULL) {
if (ax25cmp(&ax25_rt->callsign, &route->dest_addr) == 0 &&
ax25_rt->dev == ax25_dev->dev) {
- if (ax25_rt->digipeat != NULL) {
- kfree(ax25_rt->digipeat);
- ax25_rt->digipeat = NULL;
- }
+ kfree(ax25_rt->digipeat);
+ ax25_rt->digipeat = NULL;
if (route->digi_count != 0) {
if ((ax25_rt->digipeat = kmalloc(sizeof(ax25_digi), GFP_ATOMIC)) == NULL) {
write_unlock(&ax25_route_lock);
ax25_rt->digipeat->calls[i] = route->digi_addr[i];
}
}
+ write_unlock(&ax25_route_lock);
return 0;
}
ax25_rt = ax25_rt->next;
return -ENOMEM;
}
- atomic_set(&ax25_rt->ref, 0);
+ atomic_set(&ax25_rt->refcount, 1);
ax25_rt->callsign = route->dest_addr;
ax25_rt->dev = ax25_dev->dev;
ax25_rt->digipeat = NULL;
return 0;
}
-static void ax25_rt_destroy(ax25_route *ax25_rt)
+void __ax25_put_route(ax25_route *ax25_rt)
{
- if (atomic_read(&ax25_rt->ref) == 0) {
- if (ax25_rt->digipeat != NULL)
- kfree(ax25_rt->digipeat);
- kfree(ax25_rt);
- return;
- }
-
- /*
- * Uh... Route is still in use; we can't yet destroy it. Retry later.
- */
- init_timer(&ax25_rt->timer);
- ax25_rt->timer.data = (unsigned long) ax25_rt;
- ax25_rt->timer.function = (void *) ax25_rt_destroy;
- ax25_rt->timer.expires = jiffies + 5 * HZ;
-
- add_timer(&ax25_rt->timer);
+ kfree(ax25_rt->digipeat);
+ kfree(ax25_rt);
}
static int ax25_rt_del(struct ax25_routes_struct *route)
ax25cmp(&route->dest_addr, &s->callsign) == 0) {
if (ax25_route_list == s) {
ax25_route_list = s->next;
- ax25_rt_destroy(s);
+ ax25_put_route(s);
} else {
for (t = ax25_route_list; t != NULL; t = t->next) {
if (t->next == s) {
t->next = s->next;
- ax25_rt_destroy(s);
+ ax25_put_route(s);
break;
}
}
static int ax25_rt_seq_show(struct seq_file *seq, void *v)
{
+ char buf[11];
+
if (v == SEQ_START_TOKEN)
seq_puts(seq, "callsign dev mode digipeaters\n");
else {
if (ax25cmp(&ax25_rt->callsign, &null_ax25_address) == 0)
callsign = "default";
else
- callsign = ax2asc(&ax25_rt->callsign);
+ callsign = ax2asc(buf, &ax25_rt->callsign);
seq_printf(seq, "%-9s %-4s",
callsign,
if (ax25_rt->digipeat != NULL)
for (i = 0; i < ax25_rt->digipeat->ndigi; i++)
- seq_printf(seq, " %s", ax2asc(&ax25_rt->digipeat->calls[i]));
+ seq_printf(seq, " %s",
+ ax2asc(buf, &ax25_rt->digipeat->calls[i]));
seq_puts(seq, "\n");
}
/*
* Find AX.25 route
*
- * Only routes with a refernce rout of zero can be destroyed.
+ * Only routes with a reference count of zero can be destroyed.
*/
-static ax25_route *ax25_get_route(ax25_address *addr, struct net_device *dev)
+ax25_route *ax25_get_route(ax25_address *addr, struct net_device *dev)
{
ax25_route *ax25_spe_rt = NULL;
ax25_route *ax25_def_rt = NULL;
ax25_rt = ax25_spe_rt;
if (ax25_rt != NULL)
- atomic_inc(&ax25_rt->ref);
+ ax25_hold_route(ax25_rt);
read_unlock(&ax25_route_lock);
*/
int ax25_rt_autobind(ax25_cb *ax25, ax25_address *addr)
{
+ ax25_uid_assoc *user;
ax25_route *ax25_rt;
- ax25_address *call;
int err;
if ((ax25_rt = ax25_get_route(addr, NULL)) == NULL)
goto put;
}
- if ((call = ax25_findbyuid(current->euid)) == NULL) {
+ user = ax25_findbyuid(current->euid);
+ if (user) {
+ ax25->source_addr = user->call;
+ ax25_uid_put(user);
+ } else {
if (ax25_uid_policy && !capable(CAP_NET_BIND_SERVICE)) {
err = -EPERM;
goto put;
}
- call = (ax25_address *)ax25->ax25_dev->dev->dev_addr;
+ ax25->source_addr = *(ax25_address *)ax25->ax25_dev->dev->dev_addr;
}
- ax25->source_addr = *call;
-
if (ax25_rt->digipeat != NULL) {
if ((ax25->digipeat = kmalloc(sizeof(ax25_digi), GFP_ATOMIC)) == NULL) {
err = -ENOMEM;
if (ax25->sk != NULL) {
bh_lock_sock(ax25->sk);
- ax25->sk->sk_zapped = 0;
+ sock_reset_flag(ax25->sk, SOCK_ZAPPED);
bh_unlock_sock(ax25->sk);
}
return 0;
}
-ax25_route *ax25_rt_find_route(ax25_route * route, ax25_address *addr,
- struct net_device *dev)
-{
- ax25_route *ax25_rt;
-
- if ((ax25_rt = ax25_get_route(addr, dev)))
- return ax25_rt;
-
- route->next = NULL;
- atomic_set(&route->ref, 1);
- route->callsign = *addr;
- route->dev = dev;
- route->digipeat = NULL;
- route->ip_mode = ' ';
-
- return route;
-}
-
struct sk_buff *ax25_rt_build_path(struct sk_buff *skb, ax25_address *src,
ax25_address *dest, ax25_digi *digi)
{
s = ax25_rt;
ax25_rt = ax25_rt->next;
- if (s->digipeat != NULL)
- kfree(s->digipeat);
-
+ kfree(s->digipeat);
kfree(s);
}
write_unlock(&ax25_route_lock);
git://git.onelab.eu / linux-2.6.git / blobdiff